Improvement in vessels for excluding or retaining heat



i 8., QRANE. v

Vessels for Excluding or Retaining Heat.

N0,i50, 32, Patented Ma 12,1874.

UNITED STATES SEYMOURCRANE, OF DALTON, MASSACHUSETTS.

I IMPROVEMENT IN VESSELS FOR EXCLUDING OR RETAINING HEAT.

Specification forming part of Letters Patent No. 150,832, datcd May 12,1874; application filed .March 26, 1874.

T0 allwhom it may concern:

Be it known that I, SEYMOUR CRANE, of Dalton, in the county of Berkshireand State of Massachusetts, have invented an Improved Vessel forExcluding or Retaining Heat, of which the following is a specification:

The object of this invention is to produce a neat, serviceable, .andinexpensive vessel, adapted to household purposes, for preserving fromthe effects of heat certain articles, as, for instance, butter orice-water, or for retaining the heat in other articles, such, forinstance, as coffee, tea, and other warm beverages, in order to keepthem warm. The invention consists of a metallic vessel provided on itsperiphery with lugs or projections extending the whole length of thevessel, around which is arranged a covering of paper, said lugs servingto hold and support the paper at a slight distance from the vessel forcreating an intervening air-space, and said paper covering beingconfined in place at its upper edge by-an overlapping flange on thevessel, the whole being constructed so that the covering of paper andintervening space effectually prevent the passage of heat into or fromthe vessel, as hereinafter described.

I am aware that ice-pitchers have been provided with double walls, theouter one of which is of paper, with an intervening airspace, but insuch no provision is made for supporting the paper wall, which will soonbecome broken, mashed, and useless. By my invention I provide theperiphery of the vessel with lugs or projections extending the entirelength of the vessel, which, while effectually strengthening andsupporting the outer wall of paper, provides the necessary interveningair-space, which, in connection with the paper covering, prevents thepassage of heat into or from the vessel. Such cannot be accomplishedeffectually without the intervening air-space, and to provide thisair-space it is absolutely essential to support the paper covering at adistancefrom the vessel, which I accomplish by the lugs or projections.

In the accompanying drawin Figure l is a central longitudinal sectionotlthis improved vessel for excluding or retainipg heat; and

Fig. 2 is a cross section of the same, taken on the plane of the dottedline or m, Fig. 1.

A designates the inner metallic shell, which contains the matter orarticles to be preserved, such shell, in this instance, extending fromthemouth to -the bottom or opposite end of the vessel. B B indicate aseries of lugs or longitudinal projections, which are arranged atintervals on the outside of the shell A. They are fastened in place byany suitable means, as by adhesive cement, and preferably have sharpouter edges, because, when thus made, the paper case 0, which isstretched around them, will assume sharper angles, and have a moreclearly defined polygonal shape, as illustrated in Fig. 2. The case 0 ismade of paper, which is a cheap and good non-conductor of heat. It mayconsist ofa seamless tube of pa per, or may consist of a sheet made intoa band, and be slipped over the lugs B B on the shell A; or it may belapped around the lugs and afterward fastened at the meeting edges. Itis shown turned up at the bottom edge, (see Fig. 1,) to give itstiffness and strength at this point, and is fastened to a disk orpolygonally-shaped plate or bottomv piece, E, which is attached to thebottom of the shell A. A band, Gr, envelops the upper portion of thiscase O, and is bent over its edge and under a flange or rim, a, formedat the mouth of the shell A, and thus incloses the space interveningbetween such shell and the case 0, forming an inclosed air-space, whichwill very effectually assist the, case 0 of non-conducting material inpreventing the passage of heat either into or out of the vessel.Thisshell G will preferably be varnished, japanned, or otherwise treatedto render it impervious to moisture, and it will be readily seen that inthus treating it various designs may be imparted to it withoutmaterially increasing its price.

A cheap and good way of making a cover for this vessel is to produce anarched or con Vex top, H, with. an ordinary flange, b, and a rim orband, 0, to fit within the mouth of the vessel, and to fasten within theseam between such top H and its band 0 a sheet or disk, I, of paper. Itwill be seen that in this cover will be but little affected by theoutside tem-,

perature.

I elaim- The combination of the vessel A, provided on its periphery withthe lugs or projections B, with the paper covering 0, as described,

whereby the paper is strengthened and supported at a slight distancefrom the vessel by said lugs, to create the intervening air-space andall being constructed as herein described, for the purposes specified.

SEYMOUR CRANE.

Witnesses HENRY T. BROWN, MICHAEL RYAN.

